Agents told McClain they'd issue a warrant when tests results on the substance came back later in the day. The release said authorities told McClain not to leave Tuscaloosa. Patrol officers serving the warrant at the home of McClain's mother said they were initially told that he had left the state.

Blankley says McClain is being held on $500,000 bond.

McClain, originally of Fort Wayne, Indiana, was released in March after two seasons with the San Diego Chargers. He also played with Baltimore and Kansas City in a seven-year NFL career.